package com.qk.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;
import com.qk.entity.Dept;
import com.qk.mapper.DeptMapper;
import com.qk.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class DeptServiceImpl implements DeptService {
    @Autowired
    private DeptMapper deptMapper;
    // 增
    @Override
    public void add(Dept dept) {
        dept.setCreateTime(LocalDateTime.now());
        dept.setUpdateTime(LocalDateTime.now());
        deptMapper.insert(dept);
    }

    // 查    分页查询
    @Override
    public PageResult<Dept> list(String name, Integer status, Integer page, Integer pageSize) {
        // 1. 设置PageHelper分页参数
        PageHelper.startPage(page, pageSize);

        // 2. 调用mapper接口方法，执行查询
        List<Dept> deptList = deptMapper.selectList(name, status);

        // 3. 解析并封装页面结果
        Page<Dept> p = (Page<Dept>) deptList; //    强转Page目的：为了36行调用Page的方法
        return new PageResult<>(p.getTotal(), p.getResult());
    }

    // 改
    @Override
    public Dept getById(Integer id) {
        return deptMapper.selectById(id);
    }

    @Override
    public void update(Dept dept) {
        dept.setUpdateTime(LocalDateTime.now());
        deptMapper.updateById(dept);
    }

    // 删
    @Override
    public void deleteById(Integer id) {
        deptMapper.deleteById(id);
    }

    // 查询所有部门
    @Override
    public List<Dept> list() {
        return deptMapper.selectAll();
    }


}
